I have gone through your requirements.
I have experience in php over more than 3 years. we use xajax,jquery,cakephp,modx,opencart and many other opensource .
I am the one who has got most opencart reviews on freelaMore
we have 4+ years of experience in the website development. we have specialty in the oscommerce field. Please check your message box to have an look at our created shopping cart websites.
Thanks & RMore